中文说明：包括最后计算压缩图像的峰值信噪比和压缩效果的源码,用于图像处理的独立分量分析，完整的基于HMM的语音识别系统，结合PCA的尺度不变特征变换(SIFT)算法，二维声子晶体FDTD方法计算禁带宽度的例子,课程设计时编写的matlab程序代码。
English Description：
Including the final calculation of compressed images of the peak signal to noise ratio and compression effect of the source code, for image processing of independent component analysis, complete HMM based speech recognition system with PCA scale invariant feature transform (SIFT) algorithm, two-dimensional phononic crystal FDTD method calculation examples of band gap width and curriculum design prepared by the matlab program code.